RFR: 8307185: pkcs11 native libraries make JNI calls into java code while holding GC lock
Alan Bateman
alanb at openjdk.org
Wed Jul 19 14:21:45 UTC 2023
On Wed, 19 Jul 2023 12:03:14 GMT, Daniel Jeliński <djelinski at openjdk.org> wrote:
> This patch fixes random deadlocks in PKCS11 decryption and encryption code.
>
> The deadlocks were caused by object allocation in `ckAssertReturnValueOK` waiting for GC; GC was in turn waiting for `ReleasePrimitiveArrayCritical`, which never happened.
>
> The fix moves the call to `ckAssertReturnValueOK` after `ReleasePrimitiveArrayCritical`.
>
> All tests in sun/security/pkcs11 were executed with `JTREG=JAVA_OPTIONS=-Xcheck:jni` with and without this patch.
> Without this patch, 5 tests produced the following warning:
>
> Warning: Calling other JNI functions in the scope of Get/ReleasePrimitiveArrayCritical or Get/ReleaseStringCritical
>
> With this patch the warning was not observed.
>
> Tier2-3 tests are still green.
Marked as reviewed by alanb (Reviewer).
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PR Review: https://git.openjdk.org/jdk/pull/14931#pullrequestreview-1537216659
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